Strict Mode for Redirect URIs in Facebook Login

Question

Facebook announced that:

In March, they are making a security update to your app settings that will invalidate calls from URIs not listed in the Valid OAuth redirect URIs field below.This update comes in response to malicious activity they saw on their platform, and they want to protect your app or website by requiring a new strict mode for redirect URIs.

But after activating the Strict Mode option in Facebook Login -> Settings, The login action doesn't work no more.

I'm using Facebook PHP SDK v5 for CodeIgniter 3.x

Answer 1

The solution I've found based on this post is that you need to edit the Facebook.php file in application/libraries folder and search for the function authenticate.

There you need to change:

$access_token = $this->helper->getAccessToken();

To:

$access_token = $this->helper->getAccessToken(site_url('user_authentication/index'));